STRUCTURE and MORPHOLOGY of CNTs SYNTHESIZED ON Ni NANOPOWDERS
Keywords:
thermal chemical vapor deposition, carbon nanostructures, metal nanopowders, copper film, multi-walled carbon nanotubes.Abstract
The article presents the results of experiments on the synthesis of carbon nanostructures by thermal chemical vapor deposition using a nickel nanopowders obtained by electric explosion of wires as catalysts. The optimal parameters for low-temperature growth of carbon nanotubes was identify during the experiments. SEM studies revealed the existence of a range of temperatures and pressures between the low- and hightemperature synthesis regimes in which there is no growth of carbon nanostructures. The results of Raman spectroscopy and X-ray analysis showed that the most high crystallinity have samples grown at a lower temperature limit, determined in the course of the experiments. Studies by transmission electron microscopy indicate that the synthesized structures are multi-walled carbon nanotubes with metal clusters in the channel of a tube.
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